Base of a cup



FIG. 1 is a perspective view of a base of a cup showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The upper portions of the cup in FIGS. 1–7 are shown in broken lines for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a base of a cup, as shown and described. 